19467491008 has 28 divisors (see below), whose sum is σ = 44149489552. Its totient is φ = 8343210240.

The previous prime is 19467490969. The next prime is 19467491051. The reversal of 19467491008 is 80019476491.

It is a tau number, because it is divible by the number of its divisors (28).

It is a super-2 number, since 2×19467491008² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21726663 + ... + 21727558.

It is an arithmetic number, because the mean of its divisors is an integer number (1576767484).

Almost surely, 2^19467491008 is an apocalyptic number.

It is an amenable number.

19467491008 is an abundant number, since it is smaller than the sum of its proper divisors (24681998544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19467491008 is an equidigital number, since it uses as much as digits as its factorization.

19467491008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43454240 (or 43454230 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 19467491008 in words is "nineteen billion, four hundred sixty-seven million, four hundred ninety-one thousand, eight".